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Here are 20 multiple choice questions (serial no. 41 to 60) with answers for AP DDSC Secondary Grade Teacher (SGT) MCQs 2025 based on the given syllabus "Life Processes" (Science content, Class III to VIII, up to Class X difficulty):
41. What type of nutrition is exhibited by green plants?
a) Heterotrophic
b) Autotrophic
c) Parasitic
d) Saprophytic
Answer: b) Autotrophic
42. Which of the following plants obtain nutrients by trapping and digesting insects?
a) Parasitic plants
b) Autotrophic plants
c) Insectivorous plants
d) Saprophytic plants
Answer: c) Insectivorous plants
43. Which organism uses saprophytic nutrition?
a) Grass
b) Mushroom
c) Rose
d) Sunflower
Answer: b) Mushroom
44. In humans, digestion starts in the:
a) Stomach
b) Mouth
c) Small intestine
d) Large intestine
Answer: b) Mouth
45. Which enzyme in saliva helps in breaking down starch?
a) Pepsin
b) Amylase
c) Lipase
d) Trypsin
Answer: b) Amylase
46. Amoeba digests food through:
a) Photosynthesis
b) Extracellular digestion
c) Intracellular digestion
d) Saprophytic nutrition
Answer: c) Intracellular digestion
47. Respiration is the process of:
a) Taking in oxygen and giving out carbon dioxide
b) Taking in carbon dioxide and giving out oxygen
c) Breaking down food without oxygen
d) Absorbing nutrients from food
Answer: a) Taking in oxygen and giving out carbon dioxide
48. Which type of respiration occurs in the absence of oxygen?
a) Aerobic respiration
b) Anaerobic respiration
c) Photosynthesis
d) None of these
Answer: b) Anaerobic respiration
49. In plants, respiration mainly takes place through:
a) Roots
b) Leaves and stems
c) Flowers
d) Seeds
Answer: b) Leaves and stems
50. The human circulatory system is of which type?
a) Open circulatory system
b) Closed circulatory system
c) Neither open nor closed
d) Both open and closed
Answer: b) Closed circulatory system
51. The fluid that circulates in the human circulatory system is:
a) Hemolymph
b) Blood
c) Lymph only
d) Plasma only
Answer: b) Blood
52. In plants, the transport of water occurs mainly through:
a) Phloem
b) Xylem
c) Stomata
d) Roots
Answer: b) Xylem
53. Excretion in humans primarily occurs through:
a) Skin and lungs
b) Liver
c) Kidneys
d) Intestines
Answer: c) Kidneys
54. Which organ is responsible for removing waste gases from the body?
a) Kidney
b) Liver
c) Lungs
d) Skin
Answer: c) Lungs
55. The nervous system controls:
a) Digestion
b) Circulation
c) Coordination of body activities
d) Respiration
Answer: c) Coordination of body activities
56. Which part of the nervous system acts as the control center?
a) Spinal cord
b) Brain
c) Nerves
d) Sensory organs
Answer: b) Brain
57. Sexual reproduction involves:
a) One parent
b) Two parents
c) No parents
d) Budding
Answer: b) Two parents
58. Which of the following is an example of asexual reproduction?
a) Fertilization
b) Budding in Hydra
c) Pollination
d) Seed formation
Answer: b) Budding in Hydra
59. Seed dispersal is important because it:
a) Helps plants reproduce sexually
b) Helps spread plants to new areas
c) Prevents seed formation
d) Helps in asexual reproduction
Answer: b) Helps spread plants to new areas
60. Metamorphosis in animals refers to:
a) Growth of plants
b) Transformation of young ones into adults
c) Reproduction by eggs
d) Movement of animals
Answer: b) Transformation of young ones into adults
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